By Shepperd, J.A.H., C.J.
By Help with Homework
By Moore, Jo Ellen, Evans, Joy
By Ballard, Andrew
By Exam Ninja, Daisy Downes, Frank Dixon, Joshua Geake
By Peter Clarke, Clarke, Peter
By Rodda, G.W.
By Brown, Doug, Robertson, A.G., Howat, Robin D., Mullan, Edward C. K., Nisbet, Ken
By Harrison, Paul
By Allan, Ray, Williams, Martin T., Martin
By Broadbent, Paul
By D.A. Holland, C. G. Brown, Holland, D.A., Brown, C. G.
By DeGroot, Morris, Schervish, Mark
By Kirkby, David
By Gold Stars
By Parsons, Richard
By Tyler, Ken, BURKHARDT, Hugh
By Neil Griffiths
By Frood, Kate
By Scottish Primary Mathematics Group
By Scottish Primary Mathematics Group, Matthews, Bethan, etc.
By Frobisher, Len
By SPMG, Scottish Primary Maths Group